The Windows Server 2012 Core Network Guide provides instructions for planning and deploying the core components required for a fully functioning network and a new Active Directory® domain in a new forest.
This guide explains how to build on the core network by providing instructions for deploying server certificates for computers that are running Network Policy Server (NPS), Routing and Remote Access Service (RRAS), or both.
Check it out at
http://technet.microsoft.com/en-us/library/jj125379.aspx